Considering Holley sniper EFI for my 1969 340. Thoughts from people who have that set up?

maybe it's because I always run on the top 3/4s of the tank in every vehicle I own
Exactly. Not a huge deal but just something to be aware of.

I regularly drove my Sniper-equipped Dodge on longer trips so it wouldn’t have been practical to stop every 30 miles to top off the tank. I was able to run it down to 1/4 tank but just had to be aware of inclines when it was that low.

All good, just pointing out the details you might not think about before buying this stuff.